Unit Converter
Convert length, weight and temperature between metric and imperial units.
Enter your values
Fill in every field marked as required, then choose Calculate.
Result
Results appear below the form and can be copied or downloaded.
How it works
Method
Length and weight values are multiplied by the factor of the source unit to reach the base unit (metre or kilogram) and divided by the factor of the target unit. Factors are the exact international definitions (1 in = 0.0254 m, 1 lb = 0.45359237 kg). Temperatures are converted through Kelvin: K = °C + 273.15 and °C = (°F − 32) × 5 ÷ 9.
Units
Length: mm, cm, m, km, in, ft, yd, mi. Weight: g, kg, oz, lb, st. Temperature: °C, °F, K.
Examples
- 1 km = 0.6214 mi
- 100 °C = 212 °F
- 1 lb = 0.4536 kg
Limitations
Units must be of the same kind. Results are rounded to the configured decimal places, so very small values can display as 0. Negative lengths or weights and temperatures below absolute zero are rejected.
Frequently asked questions
How is the result calculated?
Length and weight values are multiplied by the factor of the source unit to reach the base unit (metre or kilogram) and divided by the factor of the target unit. Factors are the exact international definitions (1 in = 0.0254 m, 1 lb = 0.45359237 kg). Temperatures are converted through Kelvin: K = °C + 273.15 and °C = (°F − 32) × 5 ÷ 9.
Are there any limitations?
Units must be of the same kind. Results are rounded to the configured decimal places, so very small values can display as 0. Negative lengths or weights and temperatures below absolute zero are rejected.